Question 1

The duckbill platypus is different than most mammals because it

Accepted Answer

A)   lacks hair.
B)   is "cold-blooded."
C)   doesn't secrete milk.
D)   doesn't give birth, but lays eggs.
E)   All of the choices are correct.F) B) and C)
G) A) and E)

Question 2

Amphibians evolved from

Accepted Answer

A)   darters.
B)   sharks.
C)   bass and bluegill.
D)   sturgeon and catfish.
E)   lobe-finned fishes with lungs.F) A) and E)
G) All of the above

Question 3

Lungless salamanders lack lungs and breathe through their skins after they lose their gills. You would expect lungless salamanders to

Accepted Answer

A)   prefer drier habitats.
B)   prefer stagnant water.
C)   be larger than most salamanders.
D)   be restricted to smaller and/or thinner body plans.E) C) and D)
F) A) and B)

Question 4

The circulatory pathways of vertebrates are pictured. Briefly differentiate between the pathways and identify the pathways found in:Pathway A
Pathway B
Pathway C

Accepted Answer

Pathway A is found in fishes. This is a ...

Question 5

Sharks

Accepted Answer

A)   lack bony skeletons.
B)   have placoid scales.
C)   have a keen sense of smell.
D)   have teeth derived from epidermal scales.
E)   All of the choices are correct.F) B) and C)
G) A) and B)

Question 6

All of the following statements concerning birds are true EXCEPT

Accepted Answer

A)   birds have small, relatively under-developed brains.
B)   some birds do not have the ability to fly.
C)   birds have acute vision.
D)   birds use the sun, stars, and the Earth's magnetic field to guide them.E) A) and C)
F) None of the above

Question 7

The four defining characteristics of chordates are

Accepted Answer

A)   segmentation, a dorsal hollow nerve cord, pharyngeal pouches, and an amniotic egg.
B)   a dorsal hollow nerve cord, a notochord, bilateral symmetry, and mammary glands.
C)   bilateral symmetry, segmentation, a well-developed coelom, and limbs.
D)   a well-developed coelom, pharyngeal pouches, a notochord, and jaws.
E)   pharyngeal pouches, a dorsal nerve cord, a notochord, and a postanal tail.F) B) and C)
G) C) and D)

Question 8

Which of the following reptilian features enabled them to adapt to a terrestrial environment?

Accepted Answer

A)   A dry skin, ectothermy and external fertilization
B)   Two pairs of paired limbs, a septum that divides the ventricle, and well developed kidneys
C)   Skin that allows for respiration, a septum that divides the ventricle and an amniotic egg
D)   Efficient respiration, ectothermy and external fertilization
E)   Live birth, efficient excretion and two pairs of limbsF) A) and B)
G) A) and C)

Question 9

Which is the correct sequence for the evolution of reptilian features?

Accepted Answer

A)   notochord, vertebrae, jaws, bony skeleton, lungs, 4 limbs and an amniotic egg
B)   notochord, jaws, vertebrae, bony skeleton, lungs, 4 limbs and an amniotic egg
C)   notochord, vertebrae, jaws, cartilaginous skeleton, lungs, 4 limbs and an amniotic egg
D)   vertebrae, jaws, notochord, bony skeleton, lungs, 4 limbs and an amniotic egg
E)   notochord, vertebrae, jaws, 4 limbs, bony skeleton, lungs, and an amniotic eggF) All of the above
G) A) and C)

Question 10

In some chordates, the _______ is (are)  replaced by ________.

Accepted Answer

A)   pharyngeal pouches; gills
B)   dorsal hollow nerve cord; a ventral solid nerve cord
C)   gill arches; pharyngeal pouches
D)   notochord; a dorsal hollow nerve cord
E)   a vertebral column; notochordF) C) and D)
G) A) and B)

Question 11

The mammal-like reptiles that gave rise to mammals were the

Accepted Answer

A)   coelacanths.
B)   therapsids.
C)   lampreys.
D)   archaeopteryx.E) None of the above
F) All of the above

Question 12

Several lineages of reptiles evolved from a common ancestral stem reptile, each adapting to different ways of life.

Accepted Answer

A) True 
 B)False

Question 13

A notochord is

Accepted Answer

A)   a strip of cartilage that forms a back and tail in all vertebrates.
B)   a stiff dorsal supporting rod.
C)   replaced by the vertebral column during development.
D)   All of the choices are correct.
E)   a stiff dorsal supporting rod that is replaced by the vertebral column during development.F) B) and E)
G) A) and E)

Question 14

Which of the following statements best describes the jawless fishes?

Accepted Answer

A)   Ectotherms that have a bony skeleton.
B)   Ectotherms that have a smooth nonscaly skin.
C)   Endotherms that have a smooth nonscaly skin.
D)   Vertebrates that have scales and are ectothermic.E) All of the above
F) B) and D)

Question 15

What is the main reason that mammals underwent adaptive radiation after the demise of the dinosaurs?

Accepted Answer

A)   They had to adapt in order to physically survive the ice age.
B)   The mammals had little competition so it was easier for them to evolve into the niches that were once occupied by the dinosaurs.
C)   They had an "inner need" to become better suited to their environment.
D)   No answer choice is correct.E) A) and C)
F) A) and B)

Question 16

Generally the respiratory system in birds

Accepted Answer

A)   is identical to the human breathing system.
B)   is merely accelerated by the flight muscles.
C)   resembles the positive pressure system of a frog.
D)   is a one-way circulation of air so constant oxygen absorption can meet the high oxygen demand.E) A) and B)
F) None of the above

Question 17

The most successful mammals belong to the marsupials group.

Accepted Answer

A) True 
 B)False

Question 18

Identify four of the features that terrestrial vertebrates had to evolve in order to adapt to a terrestrial environment?

Accepted Answer

These features could include:
1. A thick...

Question 19

Amphibians were the dominant animal life during the ________ period.

Accepted Answer

A)   Jurassic
B)   Carboniferous
C)   Devonian
D)   Silurian
E)   CambrianF) A) and B)
G) B) and C)

Question 20

The amphibians' common receptacle for the urinary, genital, and digestive canals is the

Accepted Answer

A)   vulva.
B)   glottis.
C)   cloaca.
D)   tympanum.
E)   operculum.F) C) and D)
G) A) and C)

Exam 29: Vertebrate Evolution

Lungless salamanders lack lungs and breathe through their skins after they lose their gills. You would expect lungless salamanders to

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The duckbill platypus is different than most mammals because it

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Which is the correct sequence for the evolution of reptilian features?

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Which of the following statements best describes the jawless fishes?

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The four defining characteristics of chordates are

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In some chordates, the _______ is (are) replaced by ________.

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Several lineages of reptiles evolved from a common ancestral stem reptile, each adapting to different ways of life.

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The mammal-like reptiles that gave rise to mammals were the

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The circulatory pathways of vertebrates are pictured. Briefly differentiate between the pathways and identify the pathways found in:Pathway A Pathway B Pathway C

Correct AnswerverifiedPathway A is found in fishes. This is a ...View AnswerShow Answer

What is the main reason that mammals underwent adaptive radiation after the demise of the dinosaurs?

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A notochord is

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Amphibians were the dominant animal life during the ________ period.

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Amphibians evolved from

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Identify four of the features that terrestrial vertebrates had to evolve in order to adapt to a terrestrial environment?

Correct AnswerverifiedThese features could include:1. A thick...View AnswerShow Answer

Which of the following reptilian features enabled them to adapt to a terrestrial environment?

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All of the following statements concerning birds are true EXCEPT

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The amphibians' common receptacle for the urinary, genital, and digestive canals is the

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Sharks

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The most successful mammals belong to the marsupials group.

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Generally the respiratory system in birds

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In some chordates, the _ is (are) replaced by __.

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Pathway A is found in fishes. This is a ...
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These features could include:
1. A thick...
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